Power supply equipment cabinet heat dissipation structure for nuclear power station and cabinet

Abstract

The invention provides a power supply equipment cabinet heat dissipation structure for a nuclear power station and a cabinet, and belongs to the technical field of instrument parts, and the power supply equipment cabinet heat dissipation structure comprises a cabinet body, and a separation structure and a heat dissipation air channel which are respectively arranged in the cabinet body; a radiator is arranged in the radiating air duct; the inner cavity of the cabinet body is divided into a first chamber and a second chamber by the baffle structure and the heat dissipation air channel; the first chamber comprises an accommodating cavity and a ventilation cavity; the accommodating cavity is used for accommodating a first module; the second cavity is used for containing a second module, and the second module is attached to the radiator. According to the power supply equipment cabinet heat dissipation structure for the nuclear power station provided by the invention, cold air can be introduced into the first cavity and the second cavity respectively, so that uniform heat dissipation of the first module and the second module can be ensured, the problem of local hot spots is avoided, and the heat dissipation effect of the cabinet body is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of instrument parts, and more specifically, relates to a heat dissipation structure of a power supply equipment cabinet for a nuclear power plant. Background Art

[0002] Nuclear power plants are usually equipped with power equipment cabinets. Considering the need to combine multiple cabinets and place the cabinets against the wall, the cabinets generally adopt a ventilation method of bottom air intake and top air outlet to dissipate heat from the electrical components inside the cabinet. Since there are different electrical components inside the cabinet, the electrical components located at the top of the cabinet receive the hot air that passes through the electrical components below, resulting in poor overall cabinet heat dissipation and local hot spots. Summary of the invention

[0003] The object of the present invention is to provide a cabinet heat dissipation structure and cabinet for power supply equipment in a nuclear power plant, aiming to solve the technical problem of poor heat dissipation effect of the cabinet adopting the bottom-inlet and top-outlet ventilation mode in the prior art.

[0004] To achieve the above-mentioned object, in a first aspect, the present invention provides a heat dissipation structure of a cabinet for power supply equipment for a nuclear power plant, comprising a cabinet body, and a baffle structure and a heat dissipation duct respectively arranged in the cabinet body and connected in sequence from bottom to top; a radiator is arranged in the heat dissipation duct; The baffle structure and the heat dissipation duct divide the inner cavity of the cabinet into a first cavity and a second cavity; the first cavity includes a receiving cavity and a ventilation cavity connected up and down; the receiving cavity is used to place a first module; the second cavity is located above the receiving cavity and in front of the ventilation cavity, and the second cavity is used to place a second module, and the second module is arranged in close contact with the radiator; A first air inlet is provided on the bottom plate of the cabinet and / or the side plate of the cabinet, and a second air inlet is provided on the side plate of the cabinet; an air outlet is provided on the top plate of the cabinet; a second vent is provided on the heat dissipation duct below the radiator; wherein the first air inlet, the first chamber, and the air outlet are connected in sequence; and the second air inlet, the second vent, the heat dissipation duct and the air outlet are connected in sequence.

[0005] As a limitation of the present invention, the barrier structure forms an air inlet channel, a front end of the air inlet channel is connected to the second air inlet, and a rear end of the air inlet channel faces the second air outlet.

[0006] Furthermore, the barrier structure comprises: a baffle, the front end of which is located directly behind the second air inlet and the rear end of which is located below the second vent; The guide plate includes a lateral extension portion and a vertical extension portion which are connected in sequence; the front end of the lateral extension portion is located directly behind the second air inlet and directly below the baffle, the vertical extension portion is located behind the baffle, and the upper end of the vertical extension portion is connected to the second air outlet; wherein the air inlet channel is formed between the baffle and the lateral extension portion.

[0007] Furthermore, the second chamber is also used to place a third module, and the third module is electrically connected to the second module; the third module is placed on the baffle.

[0008] As a limitation of the present invention, the heat dissipation duct includes a first duct and a second duct connected in sequence from bottom to top; the radiator is located in the first duct, and the inner cavity structure of the first duct is adapted to the structure of the radiator; and the lower end of the first duct forms the second vent.

[0009] Furthermore, the second air duct includes an inlet portion and a flared portion which are sequentially connected from bottom to top; the inner cavity structure of the inlet portion is the same as the inner cavity structure of the first air duct; and the flared portion expands outward from bottom to top.

[0010] As a limitation of the present invention, the top end of the heat dissipation duct transversely blocks the inner cavity of the cabinet; the heat dissipation duct is also provided with a first vent connected to the first chamber, and a third vent connected to the second chamber.

[0011] Furthermore, the first ventilation opening corresponds to the third ventilation opening along the front-rear direction of the cabinet; and a copper bar is provided in the heat dissipation duct between the first ventilation opening and the third ventilation opening.

[0012] The beneficial effect of the heat dissipation structure of the power supply equipment cabinet for a nuclear power plant provided by the present invention is that: compared with the prior art, the heat dissipation structure of the power supply equipment cabinet for a nuclear power plant provided by the present invention uses a partition structure and a heat dissipation air duct to separate the inner cavity of the cabinet into a first chamber and a second chamber that are not connected to each other, and part of the cold air passes through the first chamber from bottom to top to dissipate the heat of the first module located in the lower half of the cabinet; the second module located in the upper half of the cabinet is fitted and connected to the radiator, and part of the cold air passes through the heat dissipation air duct from bottom to top and blows the radiator to take away the heat of the second module and dissipate the heat; since the first chamber and the second chamber can each be introduced with cold air, uniform heat dissipation of the first module and the second module can be ensured, local hot spots can be avoided, and the heat dissipation effect of the cabinet is improved.

[0013] In a second aspect, the present invention further provides a cabinet, comprising: The above-mentioned heat dissipation structure of the power supply equipment cabinet for nuclear power plant; A first module is placed in the accommodating cavity; A second module is placed in the second chamber; The fan assembly is located in the inner cavity of the cabinet and connected to the top of the heat dissipation duct.

[0014] As a limitation of the present invention, the second modules are distributed in multiple groups at intervals along the left and right directions of the cabinet; the fan assembly includes multiple exhaust fans arranged at intervals along the left and right directions of the cabinet, and the multiple exhaust fans correspond one by one to the multiple second modules up and down.

[0015] The cabinet provided by the present invention adopts the above-mentioned heat dissipation structure of the power supply equipment cabinet for nuclear power plants. The first chamber and the second chamber can each be filled with cold air, thereby ensuring uniform heat dissipation of the first module and the second module, avoiding local hot spots, and improving the heat dissipation effect of the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of the heat dissipation structure of a power supply cabinet for a nuclear power plant provided by an embodiment of the present invention (the left side panel of the cabinet is not shown in the figure); Figure 2 A schematic diagram of the left side structure of the heat dissipation structure of the power supply equipment cabinet for a nuclear power plant provided by an embodiment of the present invention (the left side panel is not shown in the figure); Figure 3 A schematic diagram of the structure of a cabinet provided in an embodiment of the present invention (the left side panel of the cabinet is not shown in the figure); Figure 4 A schematic diagram of the left side structure of a cabinet provided in an embodiment of the present invention (the left side panel of the cabinet is not shown in the figure); Figure 5 The main structure diagram of the cabinet provided in the embodiment of the present invention is shown in FIG. Figure 1 ; Figure 6 The main structure diagram of the cabinet provided in the embodiment of the present invention is shown in FIG. Figure 2 (The upper part of the front side panel of the cabinet is not shown in the figure).

[0018] In the figure: 1. Cabinet; 11. First chamber; 111. Accommodating chamber; 112. Ventilation chamber; 12. Second chamber; 13. First air inlet; 14. Second air inlet; 15. Air outlet; 2. Partition structure; 21. Baffle; 22. Guide plate; 221. Lateral extension portion; 222. Vertical extension portion; 3. Heat dissipation duct; 31. First air duct; 32. Second air duct; 321. Inlet portion; 322. Expanding portion; 4. Radiator; 51. First module; 52. Second module; 53. Third module; 6. Exhaust fan. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] Please also read Figure 1 and Figure 2 The heat dissipation structure of the power supply equipment cabinet for a nuclear power plant provided by the present invention is now described. The heat dissipation structure of the power supply equipment cabinet for a nuclear power plant comprises a cabinet body 1, and a baffle structure 2 and a heat dissipation duct 3 which are respectively arranged in the cabinet body 1 and sequentially connected from bottom to top; a radiator 4 is arranged in the heat dissipation duct 3; The baffle structure 2 and the heat dissipation duct 3 divide the inner cavity of the cabinet 1 into a first chamber 11 and a second chamber 12; the first chamber 11 includes a receiving chamber 111 and a ventilation chamber 112 which are connected up and down; the receiving chamber 111 is used to place the first module 51; the second chamber 12 is located above the receiving chamber 111 and in front of the ventilation chamber 112, and the second chamber 12 is used to place the second module 52, and the second module 52 is arranged in close contact with the radiator 4; A first air inlet 13 is provided on the bottom plate of the cabinet 1 and / or the side plate of the cabinet 1, and a second air inlet 14 is provided on the side plate of the cabinet 1; an air outlet 15 is provided on the top plate of the cabinet 1; a second vent is provided on the heat dissipation duct 3 below the radiator 4; wherein the first air inlet 13, the first chamber 11, and the air outlet 15 are connected in sequence; the second air inlet 14, the second vent, the heat dissipation duct 3 and the air outlet 15 are connected in sequence.

[0021] The cabinet 1 is a rectangular parallelepiped structure, and is composed of a front side panel, a rear side panel, a left side panel, a right side panel, a top panel, a bottom panel, and a support frame connecting and supporting each of the above panels. In addition, a support base may be provided at the bottom of the cabinet 1, and a rain shield may be provided at the top. In addition, a fan assembly is provided above the heat dissipation duct 3 in the inner cavity of the cabinet 1, and the fan assembly is used to extract air so that the airflow flows upward quickly.

[0022] The baffle structure 2 is arranged in the middle and upper part of the inner cavity of the cabinet 1, and the heat dissipation duct 3 is arranged at the top of the inner cavity of the cabinet 1. A fan assembly is connected above the heat dissipation duct 3. The baffle structure 2 and the heat dissipation duct 3 are mainly used to separate the inner cavity of the cabinet 1 to form a first chamber 11 and a second chamber 12 that are not connected to each other and are independent of each other.

[0023] The accommodating cavity 111 of the first chamber 11 occupies the lower half of the inner cavity of the cabinet 1, and the ventilation cavity 112 occupies the rear upper half of the inner cavity of the cabinet 1; cold air enters the first chamber 11 from the first air inlet 13, passes through the first chamber 11 from bottom to top, flows through the first module 51 to take away the heat of the first module 51, dissipates the heat, and finally flows out of the cabinet 1 from the air outlet 15.

[0024] The first air inlet 13 is arranged on the bottom plate of the cabinet 1 and / or the side plate of the cabinet 1. Considering the requirement of the cabinet 1 being combined with other cabinets and placed against a wall, the first air inlet 13 is preferably opened at the bottom of the front side plate of the cabinet 1, such as Figure 1 Specifically, the first air inlet 13 is a mesh, and filter cotton can be arranged behind it.

[0025] The second chamber 12 is located above the accommodating chamber 111. In order to facilitate daily maintenance of the second module 52 in the second chamber 12, the second module 52 should be directly facing the front side panel of the cabinet 1. Therefore, the second chamber 12 is located in front of the ventilation chamber 112, that is, the second chamber 12 occupies the front upper half of the inner cavity of the cabinet 1; it should be noted that since the ventilation chamber 112 is mainly used for cooling air, electrical components that require maintenance cannot be installed therein. Therefore, in the front-to-back direction of the cabinet 1, the width of the ventilation chamber 112 is smaller than the width of the second chamber 12.

[0026] The second air inlet 14 is preferably opened in the middle part of the front side plate of the cabinet 1. Figure 1 The second air inlet 14 is also a mesh, and filter cotton can also be arranged behind it.

[0027] The second module 52 is attached to the radiator 4 and dissipates heat through the radiator 4. The second module 52 can be a high-heat-generating device. Specifically, the radiator 4 can adopt a common structure in the prior art, including a heat dissipation substrate and a plurality of heat dissipation fins connected to the heat dissipation substrate. The second module 52 is attached to the heat dissipation substrate. Cold air passes through the heat dissipation air duct 3 from bottom to top and blows over the radiator 4 to take away the heat of the second module 52 and dissipate the heat.

[0028] Since the second module 52 dissipates heat through the radiator 4, and the radiator 4 is located in the heat dissipation duct 3, the second chamber 12 can be used as a closed chamber, and the cold air passing through the second air inlet 14 directly enters the heat dissipation duct 3 (rather than entering the second chamber 12, and thus will not blow the second module 52), so that the cabinet can be used in harsh environments such as high temperature, high humidity, and high dust. If other modules are provided in the second chamber 12, a guide fan can be provided in the second chamber 12 to circulate the air flow to take away the heat of other modules.

[0029] Of course, the second chamber 12 may also be a non-enclosed chamber, and part of the cold air passing through the second air inlet 14 enters the heat dissipation air duct 3, and part of the cold air enters the second chamber 12. The specific form of the second chamber 12 depends on the cabinet design requirements and the installation environment.

[0030] Compared with the prior art, the heat dissipation structure of the power supply equipment cabinet for a nuclear power plant provided by the present invention uses a baffle structure 2 and a heat dissipation duct 3 to separate the inner cavity of the cabinet into a first chamber 11 and a second chamber 12 that are not connected to each other, and part of the cold air passes through the first chamber 11 from bottom to top to dissipate the heat of the first module 51 located in the lower half of the cabinet 1; the second module 52 located in the upper half of the cabinet is fitted and connected to the radiator 4, and part of the cold air passes through the heat dissipation duct 3 from bottom to top and blows the radiator 4 to take away the heat of the second module 52 and dissipate the heat; because the first chamber 11 and the second chamber 12 can each be introduced with cold air, it can ensure uniform heat dissipation of the first module 51 and the second module 52, avoid the problem of local hot spots, and improve the heat dissipation effect of the cabinet 1.

[0031] In some embodiments, the barrier structure 2 may be formed as follows: Figure 1 and Figure 2 The structure shown, see Figure 1 and Figure 2 The baffle structure 2 forms an air inlet channel, the front end of the air inlet channel is connected to the second air inlet 14, and the rear end of the air inlet channel faces the second vent.

[0032] The second air inlet 14 is extended in the left-right direction of the cabinet 1, and the total length of the second air inlet 14 is slightly smaller than the width of the front side plate of the cabinet 1, that is, the total opening area of ​​the second air inlet 14 is large, so that sufficient cold air can be supplied. Since the total opening area of ​​the second air inlet 14 is large, in order to ensure that the heat dissipation channel can receive a large amount of cold air, the present embodiment forms an air inlet channel on the baffle structure 2. The air inlet channel plays the role of guiding the outside cold air to flow to the heat dissipation air duct 3 to take away the heat of the radiator 4, so as to ensure sufficient heat dissipation of the second module 52.

[0033] The air inlet channel can be a closed channel, with its front end connected to the second air inlet 14 and its rear end connected to the second vent; thus, the external cold air flows through the second air inlet 14, sequentially through the air inlet channel and the heat dissipation duct 3, takes away the heat of the radiator 4, dissipates heat for the second module 52, and then flows out from the air outlet 15. Since the external cold air does not pass through the second chamber 12, the second chamber 12 can be a closed chamber accordingly.

[0034] The air inlet channel can also be a non-enclosed channel, for example, its front end is connected to the second air inlet 14, and the rear end is connected to the second vent; part of the external cold air enters the heat dissipation channel through the air inlet channel, takes away the heat of the radiator 4 to dissipate the heat of the second module 52, and then flows out from the air outlet 15; part of the cold air enters the second chamber 12 through the second air inlet 14 and / or the air outlet end of the air inlet channel to dissipate the heat of the module in the second chamber 12.

[0035] In some embodiments, the barrier structure 2 may be formed as follows: Figure 1 and Figure 2 The structure shown, see Figure 1 and Figure 2 The baffle structure 2 includes a baffle 21 and a guide plate 22. The front end of the baffle 21 is located directly behind the second air inlet 14, and the rear end is located below the second vent; the guide plate 22 includes a transverse extension portion 221 and a vertical extension portion 222 connected in sequence; the front end of the transverse extension portion 221 is located directly behind the second air inlet 14 and directly below the baffle 21, the vertical extension portion 222 is located behind the baffle 21, and the upper end of the vertical extension portion 222 is connected to the second vent; wherein an air inlet channel is formed between the baffle 21 and the transverse extension portion 221.

[0036] The left and right edges of the air guide plate 22 are respectively connected to the side panels or frames of the cabinet 1. The air guide plate 22 is a bent plate, specifically comprising a transverse extension portion 221 and a vertical extension portion 222, wherein the transverse extension portion 221 is extended along the front-to-back direction of the cabinet 1, and its front edge is connected to the front side panel of the cabinet 1; the vertical extension portion 222 is extended along the up-down direction of the cabinet 1, or is slightly inclined relative to the up-down direction of the cabinet 1; the lower end of the vertical extension portion 222 is connected to the front end of the transverse extension portion 221, and the upper end is connected to the lower end of the heat dissipation duct 3.

[0037] The guide plate 22 is combined with the heat dissipation air duct 3 to separate the inner cavity of the cabinet 1 into a first chamber 11 and a second chamber 12. In addition, the guide plate 22 also plays the role of wind shielding and guiding.

[0038] The baffle 21 is located directly above the transverse extension 221, and cooperates with the transverse extension 221 to form an air inlet channel. The rear end of the baffle 21 is slightly forward relative to the rear end of the transverse extension 221, so there is a ventilation gap between the rear end of the baffle 21 and the vertical extension 222, which can ensure that part of the cold air can smoothly pass through the air inlet channel and enter the heat dissipation duct 3, and also allow part of the cold air to enter the second chamber 12 to further dissipate heat from the second module 52.

[0039] Preferably, the vertical extension part 222 is slightly inclined relative to the up-down direction of the cabinet 1. Specifically, the vertical extension part 222 is inclined backward from bottom to top. Since the air inlet channel extends along the front-back direction of the cabinet 1, the vertical extension part 222 adopts the above-mentioned manner, which can avoid the backflow caused by the direct impact of a large amount of cold air and the inability to redirect, so that the guide plate 22 further plays the role of guiding air; on the other hand, it can also increase the strength of the guide plate 22 and extend its service life.

[0040] In some embodiments, the second chamber 12 is also used to place a third module 53 , which is electrically connected to the second module 52 ; the third module 53 is placed on the baffle 21 .

[0041] The modules arranged in the second chamber 12 are determined according to the functions to be realized by the cabinet. Since the second module 52 is attached to the radiator 4, the heat dissipation duct 3 is located in the middle and rear of the cabinet 1, and the heat dissipation duct 3 is below the baffle structure 2, there is space in front of and below the second module 52 for installing other modules.

[0042] In this embodiment, the third module 53 is installed in the front lower part of the second module 52, and the third module 53 is placed on the baffle 21. The baffle 21 is fixed relative to the third module 53, which not only fully utilizes the internal space of the second chamber 12, but also omits the supporting structure of the third module 53, thereby reducing costs.

[0043] In addition, since the front end of the support plate is located directly behind the second air inlet 14 , external cold air can be blown directly toward the third module 53 through the second air inlet 14 to dissipate heat from the third module 53 .

[0044] Since a fan assembly is provided above the heat dissipation duct 3, the fan assembly draws air, which can speed up the flow of air and improve the heat dissipation efficiency of the second module 52 and the third module 53. In order to further increase the air outlet speed and avoid interference between multiple airflows gathered at the top of the cabinet 1, preferably, the top of the heat dissipation duct 3 horizontally blocks the inner cavity of the cabinet 1, such as Figure 1 As shown, that is to say, all airflow entering the cabinet 1 must enter the heat dissipation air duct 3 and then flow out from the air outlet 15.

[0045] In order to ensure that the airflow in the second chamber 12 can flow upward out of the cabinet 1, a third vent is further provided on the heat dissipation duct 3, and the third vent is connected to the second chamber 12. The cold air entering the second chamber 12 through the second air inlet 14 flows upward, passes through the third module 53 and the second module 52 in sequence to take away the heat, then enters the heat dissipation duct 3 from the third vent, and finally flows out of the cabinet 1 from the air outlet 15.

[0046] In addition, in order to ensure that the airflow in the first chamber 11 can flow upward out of the cabinet 1, a first vent is further provided on the heat dissipation duct 3, and the first vent is connected to the first chamber 11. The cold air entering the first chamber 11 through the first air inlet 13 flows upward, passes through the first module 51 to take away the heat, then enters the heat dissipation duct 3 from the first vent, and finally flows out of the cabinet 1 from the air outlet 15.

[0047] Preferably, the third vents and the first vents are spaced apart in a plurality along the left-right direction of the cabinet 1, and the plurality of third vents correspond to the plurality of first vents in a one-to-one manner in the front-back direction of the cabinet 1. In addition to passing air, the third vents and the first vents can also be provided with copper bars. In other words, the copper bars electrically connected to the first module 51 or the second module 52 can pass through the heat dissipation duct 3 through the third vents, and then be connected to other electrical components in the first chamber 11.

[0048] It should be noted that, in order to ensure the insulation between the copper bar and the heat dissipation duct 3, an insulating plate is respectively provided on the outer peripheral edges of the plurality of third ventilating openings and the outer peripheral edges of the plurality of first ventilating openings.

[0049] In some embodiments, the heat dissipation duct 3 may be configured as follows: Figure 1 and Figure 2 The structure shown, see Figure 1 and Figure 2 The heat dissipation air duct 3 includes a first air duct 31 and a second air duct 32 connected in sequence from bottom to top; the radiator 4 is located in the first air duct 31, and the inner cavity structure of the first air duct 31 is adapted to the structure of the radiator 4; and a second vent is formed at the lower end of the first air duct 31.

[0050] The radiator 4 may adopt a common structure in the prior art, including a heat dissipation substrate and a plurality of heat dissipation fins connected to the heat dissipation substrate. The surface of the heat dissipation substrate is perpendicular to the front-to-back direction of the cabinet 1, and the second module 52 is attached to the heat dissipation substrate. The surface of the heat dissipation fin is perpendicular to the left-right direction of the cabinet 1, and the plurality of heat dissipation fins are spaced apart along the left-right direction of the cabinet 1.

[0051] The inner cavity structure of the first air duct 31 is compatible with the structure of the radiator 4, that is, the cold air passing through the first air duct 31 will all pass through the radiator 4 to take away the heat, thereby avoiding the loss of cold energy.

[0052] Since the first module 51 is attached to the heat dissipation substrate, the front side wall of the first air duct 31 is the heat dissipation substrate. Moreover, the inner cavity structure of the first air duct 31 is compatible with the structure of the radiator 4, and the other side walls of the first air duct 31 can also be regarded as a support frame for fixing the radiator 4. The support frame is composed of a left support plate, a right support plate and a rear support plate, and is surrounded by a rectangular frame, and the radiator 4 is fixed in the support frame. Therefore, the fixed frame and the heat dissipation substrate form the first air duct 31.

[0053] In some embodiments, the second air duct 32 may be configured as follows: Figure 1 and Figure 2 The structure shown, see Figure 1 and Figure 2 The second air duct 32 includes an inlet portion 321 and a flared portion 322 which are sequentially connected from bottom to top; the inner cavity structure of the inlet portion 321 is the same as that of the first air duct 31; and the flared portion 322 expands outward from bottom to top.

[0054] The inlet portion 321 is used to connect with the first air duct 31 and plays the role of intermediate transition. The flared portion 322 is a trumpet-shaped structure, the top of which horizontally blocks the inner cavity of the cabinet 1, and a fan assembly is arranged above. A plurality of third vents are arranged on the front side wall of the flared portion 322, and a plurality of first vents are arranged on the rear side wall.

[0055] The flared portion 322 gathers airflow to avoid interference among multiple airflows gathered at the top of the cabinet 1 , and can speed up the airflow outlet speed, thereby improving the heat dissipation efficiency of the first module 51 , the second module 52 and the third module 53 .

[0056] Please refer to Figures 3 to 6 Based on the same inventive concept, an embodiment of the present application also provides a cabinet, including the above-mentioned heat dissipation structure of the power equipment cabinet for a nuclear power plant, a first module 51, a second module 52 and a fan assembly; the first module 51 is placed in the accommodating cavity 111; the second module 52 is placed in the second cavity 12; the fan assembly is located in the inner cavity of the cabinet 1 and is connected to the top of the heat dissipation duct 3.

[0057] The cabinet provided by the present invention adopts the above-mentioned heat dissipation structure of the power supply equipment cabinet for nuclear power plants, and uses a partition structure 2 and a heat dissipation duct 3 to separate the inner cavity of the cabinet into a first chamber 11 and a second chamber 12 that are not connected to each other. Part of the cold air passes through the first chamber 11 from bottom to top to dissipate the heat of the first module 51 located in the lower half of the cabinet 1; the second module 52 located in the upper half of the cabinet is fitted and connected to the radiator 4, and part of the cold air passes through the heat dissipation duct 3 from bottom to top and blows on the radiator 4 to take away the heat of the second module 52 and dissipate the heat; since the first chamber 11 and the second chamber 12 can each be introduced with cold air, it can ensure uniform heat dissipation of the first module 51 and the second module 52, avoid the problem of local hot spots, and improve the heat dissipation effect of the cabinet 1.

[0058] In some embodiments, the second module 52 and the fan assembly can be used as follows: Figure 6 The structure shown, see Figure 6 , the second modules 52 are distributed in multiple groups at intervals along the left and right directions of the cabinet 1 ; the fan assembly includes multiple exhaust fans 6 arranged at intervals along the left and right directions of the cabinet 1 , and the multiple exhaust fans 6 correspond to the multiple second modules 52 one by one up and down.

[0059] The number of the second modules 52 is determined according to the functions and power to be achieved by the cabinet, and the number of the exhaust fans 6 corresponds to the number of the second modules 52. In this way, the heat can be evenly dissipated from the plurality of second modules 52, so that the plurality of second modules 52 maintain a uniform temperature, further avoiding the problem of local hot spots.

[0060] Moreover, a plurality of exhaust fans 6 are provided, and even if one of them fails, the normal operation of the fan assembly can be ensured, and the inner cavity of the cabinet will not be overheated.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat dissipation structure of a power supply equipment cabinet for a nuclear power plant, characterized in that: It comprises a cabinet (1), and a baffle structure (2) and a heat dissipation duct (3) which are respectively arranged in the cabinet (1) and are sequentially connected from bottom to top; a radiator (4) is arranged in the heat dissipation duct (3); The baffle structure (2) and the heat dissipation duct (3) divide the inner cavity of the cabinet (1) into a first chamber (11) and a second chamber (12); the first chamber (11) comprises a receiving chamber (111) and a ventilation chamber (112) which are connected to each other from top to bottom; the receiving chamber (111) is used to place a first module (51); the second chamber (12) is located above the receiving chamber (111) and in front of the ventilation chamber (112), and is used to place a second module (52); the second chamber (12) is used to place a second module (52), and the second module (52) is arranged in close contact with the radiator (4); A first air inlet (13) is provided on the bottom plate of the cabinet (1) and / or the side plate of the cabinet (1), and a second air inlet (14) is provided on the side plate of the cabinet (1); an air outlet (15) is provided on the top plate of the cabinet (1); and a second vent is provided on the heat dissipation duct (3) below the radiator (4); wherein the first air inlet (13), the first chamber (11), and the air outlet (15) are connected in sequence; and the second air inlet (14), the second vent, the heat dissipation duct (3), and the air outlet (15) are connected in sequence.

2. The heat dissipation structure of a power supply cabinet for a nuclear power plant according to claim 1, characterized in that: The baffle structure (2) forms an air inlet channel, the front end of the air inlet channel is connected to the second air inlet (14), and the rear end of the air inlet channel faces the second air outlet.

3. The heat dissipation structure of a power supply cabinet for a nuclear power plant as claimed in claim 2, characterized in that: The baffle structure (2) comprises: A baffle (21), the front end of which is located directly behind the second air inlet (14) and the rear end of which is located below the second vent; The guide plate (22) comprises a transverse extension portion (221) and a vertical extension portion (222) which are connected in sequence; the front end of the transverse extension portion (221) is located directly behind the second air inlet (14) and directly below the baffle plate (21); the vertical extension portion (222) is located behind the baffle plate (21), and the upper end of the vertical extension portion (222) is connected to the second air outlet; wherein the air inlet channel is formed between the baffle plate (21) and the transverse extension portion (221).

4. The heat dissipation structure of a power supply cabinet for a nuclear power plant as claimed in claim 3, characterized in that: The second chamber (12) is also used to place a third module (53), the third module (53) being electrically connected to the second module (52); the third module (53) is placed on the baffle (21).

5. The heat dissipation structure of a power supply cabinet for a nuclear power plant according to claim 1, characterized in that: The heat dissipation air duct (3) comprises a first air duct (31) and a second air duct (32) which are connected in sequence from bottom to top; the radiator (4) is located in the first air duct (31), and the inner cavity structure of the first air duct (31) is compatible with the structure of the radiator (4); and the lower end of the first air duct (31) forms the second vent.

6. The heat dissipation structure of a power supply cabinet for a nuclear power plant as claimed in claim 5, characterized in that: The second air duct (32) comprises an inlet portion (321) and a flared portion (322) which are connected in sequence from bottom to top; the inner cavity structure of the inlet portion (321) is the same as the inner cavity structure of the first air duct (31); and the flared portion (322) expands outwards from bottom to top.

7. The heat dissipation structure of a power supply cabinet for a nuclear power plant according to claim 1, characterized in that: The top end of the heat dissipation duct (3) laterally blocks the inner cavity of the cabinet (1); the heat dissipation duct (3) is also provided with a first ventilation opening communicating with the first chamber (11), and a third ventilation opening communicating with the second chamber (12).

8. The heat dissipation structure of a power supply cabinet for a nuclear power plant as claimed in claim 7, characterized in that: The first ventilation opening and the third ventilation opening correspond to each other along the front-rear direction of the cabinet (1); and a copper bar is provided in the heat dissipation air duct (3) between the first ventilation opening and the third ventilation opening.

9. A cabinet, characterized in that: include: The heat dissipation structure of a power supply equipment cabinet for a nuclear power plant as described in any one of claims 1 to 8; A first module (51) is placed in the accommodating cavity (111); A second module (52) is placed in the second chamber (12); The fan assembly is located in the inner cavity of the cabinet (1) and is connected to the top of the heat dissipation duct (3).

10. The cabinet according to claim 9, characterized in that: The second modules (52) are arranged in a plurality of groups at intervals along the left-right direction of the cabinet (1); the fan assembly comprises a plurality of exhaust fans (6) arranged in a plurality of groups at intervals along the left-right direction of the cabinet (1), and the plurality of exhaust fans (6) correspond to the plurality of second modules (52) one by one in the upper and lower directions.

Images